Device for accommodating wound film bands



m P u C s W DEVICE FOR ACCOMMODATING WOUND FILM BANDS Filed May 10, 1934 Patented May 19, 1936 UNITED STATES DEVICE FOR ACCOMIVIODATING WOUND FILM BANDS Werner Scupin, Namslau, Germany Application May 10, 1934, Serial No. 724,969 In Germany January 21, 1933 2 Claims.

This invention relates to a device with which a wound film band can be gripped without touching the edges of the outer. layer of the band and be removed from the film holder.

The feature of the invention consists in that the device is composed of a central axle carrying radially adjustable elements which can be introduced into the space surrounded by the innermost film band layer and then pressed against this band layer; owing to the adjustability of the lengths of the arms the drive can be introduced into small or large band rolls.

An embodiment of the invention is illustrated diagrammatically by way of example in the accompanying drawing in which:-

Fig. 1 is a plan view of the inner side of the disc on which the device is supported.

Fig. 2 shows the inner side of the cover disc.

Fig. 3 is a vertical section through Fig. 4.

Fig. 4 is a section on line IVIV of Fig. 3.

Three plates I forming the bottom of the device are interconnected by an outer ring 2 which is interrupted at three points by windows 3; these windows 3 and windows 4 situated between the plates I serve for looking into the interior of the device. The plates l are placed on a tube 5 through which a tube 1 extends which is supported by means of blocks 6. An adjusting disc 8 is arranged rotatable about the tube 1 and secured by a ring 25 fixed on the tube 1. This adjusting disc 8 has teeth on one face, these teeth engaging with pinions 9 keyed each on the end of one screw spindle I0. These spindles I extend through apertures in the tube and their other ends rotate in bearings II in thering 2. Spindle tubes I2 surrounding the spindles l0 .and secured against rotation carry each a block l3 on which a rubber pad I4 is fixed.

If the adjusting disc 8 is rotated in one direction, the rubber pads l4 move radially outwards from the centre, that is from the tube 1, whereas they move towards this tube if the adjusting disc 8 is rotated in the opposite direction. To insert the pad aggregate into the space formed by the inner layer of a wound film band 24, the pads must be in the last mentioned position, whereupon by rotating the adjusting disc 8 the bufiers 5 are pushed against the innermost film band layer, which is thus firmly held. In order to secure the disc 8 against backward rotation, it has notches l 5 in its rim with which a locking pin it engages under the pressure exerted by a spring 11. The 10 pin Hi can be disengaged from the notch by means of a knob M. It is evident that the shape of the locking pin and of the notches can be so chosen that the pin easily engages in the notches and is pressed back out of engagement by the rotating disc 8. A cover disc 19 with windows 20 and with an outer ring 22 having windows 2| has a screw threaded tube 23 which is screwed on to the end of the tube 1, so that the film roll is enclosed between the discs I and I9. 20

I claim:-

1. A device for accommodating wound film bands to be inserted in the space in the rolled film, comprising in combination a hollow axle, a plurality of screw threaded spindles extending 25 radially from said axle, pinions one on the inner end of each of said spindle, blocks mounted one on each of said spindles, secured against rotation but shiftable in the longitudinal direction of said spindles, a toothed adjusting disc engaging all of said pinions and rotatable on said hollow axle to rotate said spindles through the intermediary of said pinions to radially displace said blocks relatively to said axle, and rubber pads one on the outer side of each of said blocks adapted to bear against the innermost layer of the wound spool.

2. In a device as specified in claim 1 the adjusting disc provided with notches and. at least one locking pin adapted to engage said notches to secure said disc against accidental rotation.

WERNER SCUPIN. 

